diff --git a/CHANGELOG.md b/CHANGELOG.md
index 553df9a..547ae58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+- [#62] Update postgresql to 17.9
 
 ## [v14.21-2] - 2026-03-31
 ### Changed
diff --git a/Dockerfile b/Dockerfile
index e45fd84..02f0157 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-ARG PG_MAJOR=14
-ARG PG_MINOR=21
+ARG PG_MAJOR=17
+ARG PG_MINOR=9
 
 ARG ALPINE_VERSION=3.23
 
@@ -21,7 +21,7 @@ FROM postgres:${PG_MAJOR}.${PG_MINOR}-alpine${ALPINE_VERSION}
 ARG PG_MAJOR
 
 LABEL NAME="official/postgresql" \
-      VERSION="14.21-2" \
+      VERSION="17.9-0" \
       maintainer="hello@cloudogu.com"
 
 # change the UID and GID for the postgres-user to 1000 so it matches the volume-mounts
@@ -58,4 +58,4 @@ EXPOSE 5432
 
 ENTRYPOINT ["/startup.sh"]
 
-CMD ["postgres"]
+CMD ["postgres"]
\ No newline at end of file
diff --git a/dogu.json b/dogu.json
index e78e90a..c3e8b6d 100644
--- a/dogu.json
+++ b/dogu.json
@@ -1,6 +1,6 @@
 {
   "Name": "official/postgresql",
-  "Version": "14.21-2",
+  "Version": "17.9-0",
   "DisplayName": "PostgreSQL",
   "Description": "PostgreSQL Database.",
   "Url": "https://www.postgresql.org/",